Automatic dustproof device for subway foundation pit construction
By designing the installation and adjustment components of the automatic spray dust suppression device, the problems of existing devices being unable to flexibly adjust the spray angle and the inconvenience of connecting multiple devices were solved, realizing efficient fixed-point spraying in areas with high dust concentration and improving the dust reduction efficiency of subway foundation pit construction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUANGZHOU METRO CONSTR MANAGEMENT CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-07
AI Technical Summary
The existing dust suppression spraying system for subway foundation pit construction cannot flexibly adjust the spraying angle, cannot perform targeted spraying in areas with high dust concentrations, and multiple devices are not easily connected for water supply.
An automatic dust suppression spraying device was designed, comprising an installation component, a storage component, an adjustment component, and a spraying component. Multiple storage components are connected via a connecting ring and a high-pressure hose. The spraying angle is adjusted using a drive motor, and a dust sensor and a high-pressure atomizing nozzle are used for targeted spraying.
It enables convenient installation and connection of multiple spray devices, improves the efficiency of fixed-point spraying in areas with high dust concentration, and enhances the convenience and practicality of the device.
Smart Images

Figure CN224462476U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of subway foundation pit technology, specifically an automatic spray dust suppression device for subway foundation pit construction. Background Technology
[0002] A subway foundation pit is a deep excavation area used to support underground tunnels and station structures during subway construction. Its design, construction, and maintenance are crucial to the surrounding environment, subway operation, and the safety of the subway itself. A subway foundation pit refers to a pit-shaped space with a certain depth and size excavated on the ground surface for the construction of underground subway structures. It is an important basic link in subway engineering construction. With the acceleration of urbanization and the continuous development of rail transit, the design and construction technology of subway foundation pit engineering will continue to innovate and improve in order to improve engineering safety, quality, and efficiency.
[0003] Existing dust suppression spraying devices for subway foundation pit construction can reduce dust generated during construction, but they are not easy to adjust the spraying angle, making it impossible to target areas with high dust concentrations and thus reducing dust suppression efficiency. In addition, they are not easy to connect multiple devices, requiring multiple devices to be replenished with water during use.
[0004] Based on this, an automatic spray dust suppression device for subway foundation pit construction is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content
[0005] The purpose of this utility model is to provide an automatic spray dust suppression device for subway foundation pit construction, so as to solve the problems in the background technology of inconvenience in adjusting the angle and inconvenience in connecting multiple devices.
[0006] To achieve the above objectives, this utility model provides the following technical solution:
[0007] An automatic sprinkler dust suppression device for subway foundation pit construction includes a base plate, a first water tank installed on the top of the base plate, two first water pumps installed on the left and right sides of the first water tank, and a water outlet pipe installed at the outlet end of the first water pump.
[0008] An installation assembly is threadedly connected to one side of the water outlet pipe. The installation assembly includes a connecting ring, which is threadedly connected to one side of the water outlet pipe. The right side of the connecting ring is slidably connected to the outside of the connecting pipe. A sealing gasket is installed on the left side of the connecting pipe, and a first high-pressure hose is installed on the right side of the connecting pipe.
[0009] A storage assembly is connected to the right flange of the first high-pressure hose. The storage assembly includes a water inlet pipe. The water inlet pipe flange is connected to one side of the first high-pressure hose. A control valve is installed in the middle of the water inlet pipe. A second water tank is installed on the right side of the water inlet pipe.
[0010] An adjustment mechanism is installed on the top of the second water tank.
[0011] Based on the above technical solutions, this utility model also provides the following optional technical solutions:
[0012] In one alternative: a water inlet is provided on the top of the first water tank, a control panel is installed in the middle of the front side of the first water tank, and a storage battery is installed at the bottom of the front side of the first water tank.
[0013] In one alternative: the battery is electrically connected to the first water pump and the control panel via a parallel circuit.
[0014] In one alternative: a vent valve is installed on the top right front side of the second water tank, a support plate is installed on the bottom of the second water tank, a quick-release battery is installed in the middle of the front side of the second water tank, a second water pump is installed on the top rear side of the second water tank, and a second high-pressure hose is installed at the outlet of the second water pump.
[0015] In one alternative: a connecting assembly is installed on the bottom side of the second water tank.
[0016] In one alternative: the connecting assembly includes a delivery pipe installed at the bottom of one side of the second water tank, and a switch valve is installed in the middle of the delivery pipe.
[0017] In one alternative: the adjustment assembly includes a fixing frame mounted on top of the second water tank, a drive motor mounted on one side of the fixing frame, and a rotating shaft mounted on the output end of the drive motor.
[0018] In one alternative: a spray assembly is mounted on one side of the rotating shaft.
[0019] In one alternative embodiment: the spray assembly includes a water outlet plate mounted on one side of a rotating shaft, a connection port installed at the bottom left side of the water outlet plate, the connection port being connected to a second high-pressure hose, a high-pressure atomizing nozzle mounted on the top of the water outlet plate, and a dust sensor mounted on one side of the high-pressure atomizing nozzle.
[0020] In one alternative: the quick-release battery is electrically connected to the second water pump, the drive motor, and the dust sensor via a parallel circuit.
[0021] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0022] 1. This utility model facilitates the installation and connection of storage components through the installation component. By connecting the connection component and the installation component on one side of another storage component, it is easy to install multiple storage components, which in turn facilitates the installation of multiple spray components, improving the convenience of dust prevention and spraying of the device. At the same time, it is easy to supply water to the connected second water tank through the first water tank, thus improving the practicality of the device.
[0023] 2. This utility model, through the combined use of the adjustment component and the spraying component, facilitates the angle adjustment of the high-pressure atomizing nozzle, thereby improving the convenience of the device. This allows for targeted spraying of areas with high dust concentrations. The dust sensor facilitates the detection of dust, and when the concentration exceeds the set range, water is sprayed out through the high-pressure atomizing nozzle. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0025] Figure 2 This is a schematic diagram of the base plate of this utility model.
[0026] Figure 3 This is a schematic diagram of the installation component, storage component, and connection component of this utility model.
[0027] Figure 4 This is a schematic diagram of the adjustment component and the spraying component of this utility model.
[0028] Figure reference numerals: 1. Base plate; 11. First water tank; 12. Water inlet; 13. Control panel; 14. Battery; 15. First water pump; 16. Water outlet pipe; 2. Connecting ring; 21. Connecting pipe; 22. Sealing gasket; 23. First high-pressure hose; 24. Water inlet pipe; 25. Control valve; 26. Second water tank; 27. Vent valve; 28. Support plate; 29. Quick-release battery; 210. Second water pump; 211. Second high-pressure hose; 212. Delivery pipe; 213. Switch valve; 3. Fixing frame; 31. Drive motor; 32. Rotating shaft; 33. Water outlet plate; 34. Connection port; 35. High-pressure atomizing nozzle; 36. Smoke and dust sensor. Detailed Implementation
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0030] In one embodiment, such as Figures 1-4As shown, an automatic sprinkler dust suppression device for subway foundation pit construction includes a base plate 1, a first water tank 11 installed on the top of the base plate 1, two first water pumps 15 installed on the left and right sides of the first water tank 11, and a water outlet pipe 16 installed at the outlet end of the first water pump 15.
[0031] The outlet pipe 16 is threadedly connected to one side of an installation assembly, which includes a connecting ring 2. The connecting ring 2 is threadedly connected to one side of the outlet pipe 16. The right side of the connecting ring 2 is slidably connected to the outside of the connecting pipe 21. A sealing gasket 22 is installed on the left side of the connecting pipe 21, and a first high-pressure hose 23 is installed on the right side of the connecting pipe 21.
[0032] A storage assembly is connected to the right flange of the first high-pressure hose 23. The storage assembly includes a water inlet pipe 24. The water inlet pipe 24 is flanged and connected to one side of the first high-pressure hose 23. A control valve 25 is installed in the middle of the water inlet pipe 24. A second water tank 26 is installed on the right side of the water inlet pipe 24.
[0033] An adjustment assembly is installed on the top of the second water tank 26.
[0034] In this embodiment, the water inside the first water tank 11 is drawn out by the operation of the first water pump 15 and sent into the installation assembly through the outlet pipe 16. The connecting ring 2 slides and rotates on the outside of the connecting pipe 21, thereby making the connecting ring 2 and the outlet pipe 16 threadedly connected. The connection is sealed by the sealing gasket 22 to facilitate the water to be sent into the first high-pressure hose 23. The flange connection between the first high-pressure hose 23 and the storage assembly sends water into the storage assembly to supply water to the second water tank 26.
[0035] In one embodiment, such as Figure 1 and Figure 2 As shown, the first water tank 11 has a water inlet 12 on its top, a control panel 13 is installed in the middle of the front side of the first water tank 11, and a storage battery 14 is installed at the bottom of the front side of the first water tank 11. The storage battery 14 is electrically connected to the first water pump 15 and the control panel 13 through a parallel circuit. The storage battery 14 provides power to the first water pump 15 and the control panel 13. The control panel 13 facilitates the control of the operation of the first water pump 15, thus improving the convenience of the device.
[0036] In one embodiment, such as Figure 1 and Figure 3As shown, a vent valve 27 is installed on the top right front side of the second water tank 26, a support plate 28 is installed on the bottom of the second water tank 26, a quick-release battery 29 is installed in the middle of the front side of the second water tank 26, a second water pump 210 is installed on the top rear side of the second water tank 26, a second high-pressure hose 211 is installed at the outlet end of the second water pump 210, and a connecting assembly is installed on the bottom side of one side of the second water tank 26. The connecting assembly includes a delivery pipe 212, which is installed on the bottom side of one side of the second water tank 26. A switch valve 213 is installed in the middle of the delivery pipe 212. Water is drawn out of the second water tank 26 by the second water pump 210 and sent into the spray assembly through the second high-pressure hose 211. The vent valve 27 balances the air pressure inside the second water tank 26, improving the convenience of the device.
[0037] In one embodiment, such as Figure 1 , Figure 3 and Figure 4 As shown, the adjustment assembly includes a fixing frame 3, which is installed on the top of the second water tank 26. A drive motor 31 is installed on one side of the fixing frame 3, and a rotating shaft 32 is installed at the output end of the drive motor 31. A spray assembly is installed on one side of the rotating shaft 32. The spray assembly includes a water outlet plate 33, which is installed on one side of the rotating shaft 32. A connection port 34 is installed at the bottom left side of the water outlet plate 33, and the connection port 34 is connected to the second high-pressure hose 211. A high-pressure atomizing nozzle 35 is installed on the top of the water outlet plate 33, and a smoke and dust sensor 36 is installed on one side of the high-pressure atomizing nozzle 35. The quick-release battery 29 is electrically connected to the second water pump 210, the drive motor 31, and the dust sensor 36 through a parallel circuit. The quick-release battery 29 supplies power to the second water pump 210, the drive motor 31, and the dust sensor 36, and facilitates quick replacement of the battery inside the quick-release battery 29. The drive motor 31 drives the rotating shaft 32 to rotate, so as to adjust the spray angle of the spray assembly. The second high-pressure hose 211 is connected to the connection port 34 to send the pumped water into the water outlet plate 33. The water is atomized and sprayed out through the high-pressure atomizing nozzle 35. The dust concentration is detected by the dust sensor 36.
[0038] The above embodiment discloses an automatic sprinkler dust suppression device for subway foundation pit construction. The bottom of the first water tank 11 is supported by a base plate 1. A connecting ring 2 slides and rotates on the outside of the connecting pipe 21, facilitating a threaded connection between the connecting ring 2 and the outlet pipe 16. This facilitates the connection between the installation components and the outlet pipe 16. A threaded connection is also made between the connecting ring 2 in another installation component and the delivery pipe 212, facilitating the interconnection and installation of multiple storage components, thus improving the device's practicality and coverage. A battery 14 powers the first water pump 15 and control panel 13. The control panel 13 controls the operation of the first water pump 15. The opening of the control valve 25 facilitates the connection of multiple second water tanks 26. A first high-pressure hose 23 allows for easy adjustment of the placement and angle of the multiple second water tanks 26, improving the device's convenience. The operation of the first water pump 15 sprays water from the first water tank 11 into the interior of the first water tank. After water is extracted, it is sent to multiple second water tanks 26 through the first high-pressure hose 23. Since the multiple second water tanks 26 are connected, the liquid level inside the multiple second water tanks 26 is the same during water supply. The air valve 27 allows air to circulate inside and outside the second water tanks 26 to facilitate water supply. The quick-release battery 29 powers the storage component, adjustment component and spray component. The quick-release battery 29 also facilitates battery replacement, improving the convenience of the device. The operation of the drive motor 31 drives the rotating shaft 32 to rotate inside the fixed frame 3 to adjust the angle of the water outlet plate 33. The dust sensor 36 detects the dust content in the air. When the dust content reaches the set value, the operation of the second water pump 210 extracts water from the second water tanks 26 and sends it to the water outlet plate 33 through the connection port 34 through the second high-pressure hose 211. Finally, the water is atomized and sprayed out through the high-pressure atomizing nozzle 35 to cover the dust.
[0039] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An automatic sprinkler dust suppression device for subway foundation pit construction, comprising a base plate (1), characterized in that, The top of the base plate (1) is equipped with a first water tank (11), and two first water pumps (15) are installed on the left and right sides of the first water tank (11). The outlet end of the first water pump (15) is equipped with an outlet pipe (16). The outlet pipe (16) is threadedly connected to one side of an installation assembly, which includes a connecting ring (2). The connecting ring (2) is threadedly connected to one side of the outlet pipe (16), and the right side of the connecting ring (2) is slidably connected to the outside of the connecting pipe (21). A sealing gasket (22) is installed on the left side of the connecting pipe (21), and a first high-pressure hose (23) is installed on the right side of the connecting pipe (21). The right flange of the first high-pressure hose (23) is connected to a storage assembly, which includes a water inlet pipe (24). The water inlet pipe (24) is flanged and connected to one side of the first high-pressure hose (23). A control valve (25) is installed in the middle of the water inlet pipe (24). A second water tank (26) is installed on the right side of the water inlet pipe (24). An adjustment assembly is installed on the top of the second water tank (26).
2. The automatic sprinkler dust suppression device for subway foundation pit construction according to claim 1, characterized in that, The first water tank (11) is provided with a water inlet (12) at the top, a control panel (13) is installed in the middle of the front side of the first water tank (11), and a storage battery (14) is installed at the bottom of the front side of the first water tank (11).
3. The automatic sprinkler dust suppression device for subway foundation pit construction according to claim 2, characterized in that, The battery (14) is electrically connected to the first water pump (15) and the control panel (13) via a parallel circuit.
4. The automatic sprinkler dust suppression device for subway foundation pit construction according to claim 1, characterized in that, A vent valve (27) is installed on the top right front side of the second water tank (26), a support plate (28) is installed on the bottom of the second water tank (26), a quick-release battery (29) is installed in the middle of the front side of the second water tank (26), a second water pump (210) is installed on the top rear side of the second water tank (26), and a second high-pressure hose (211) is installed at the outlet end of the second water pump (210).
5. An automatic sprinkler dust suppression device for subway foundation pit construction according to claim 4, characterized in that, A connecting component is installed on one side of the bottom of the second water tank (26).
6. An automatic sprinkler dust suppression device for subway foundation pit construction according to claim 5, characterized in that, The connecting assembly includes a delivery pipe (212) installed on the bottom side of the second water tank (26), and a switch valve (213) is installed in the middle of the delivery pipe (212).
7. An automatic sprinkler dust suppression device for subway foundation pit construction according to claim 1, characterized in that, The adjustment assembly includes a fixing frame (3) which is installed on the top of the second water tank (26). A drive motor (31) is installed on one side of the fixing frame (3), and a rotating shaft (32) is installed at the output end of the drive motor (31).
8. An automatic sprinkler dust suppression device for subway foundation pit construction according to claim 7, characterized in that, A spray assembly is installed on one side of the rotating shaft (32).
9. An automatic sprinkler dust suppression device for subway foundation pit construction according to claim 8, characterized in that, The spray assembly includes a water outlet plate (33), which is installed on one side of the rotating shaft (32). A connection port (34) is installed on the bottom left side of the water outlet plate (33), which is connected to a second high-pressure hose (211). A high-pressure atomizing nozzle (35) is installed on the top of the water outlet plate (33), and a dust sensor (36) is installed on one side of the high-pressure atomizing nozzle (35).
10. An automatic sprinkler dust suppression device for subway foundation pit construction according to claim 4, characterized in that, The quick-release battery (29) is electrically connected to the second water pump (210), the drive motor (31), and the dust sensor (36) via a parallel circuit.